Improved water-indicator for steam-boilers



UNTTED STATES PATENT OFFICE.

J OI-IN L. FRISBIE, OF CINCINNATI, OHIO.

lNlPROVED WATER-INDICATOR FOR STEAM-BOILERS.

Specication forming part of Letters Patent No. 24,017, dated May 17,1859.

To all whom it may concern:

Be it known that I, JOHN L. FRISBIE, of Cincinnati, Hamilton county,Ohio, have invented a new and useful Improvement in VVater-Indicatorsfor Steam-Boilers; and I do hereby declare the following to be a fulland exact description thereof,. reference being had to the annexeddrawings, making part of this specification.

The invention relates to a construction of an automatic steamalarm-whistle, by which the engineer is enabled (without entering theboiler and without removal or disarran gement of the apparatus) to varythe point of alarm, or, if occasion require, to sound the whistle byhand.

Figures 1 and 2 are axial sections representing two forms of myimprovement adapted to the end of a boiler.

A represents a part of the end of a boiler. The pipe B, which conductsthe steam to the whistle WV, is not fixed immovably in the boiler, as inthe customary mode, but is adapted to be adjusted longitudinally7 withina box, C, provided with a collar, D, and a nut, E, for attachment to theboiler. rlhe inner end of the box C lits the pipe B by a ground joint,F, its outer end being furnished with a stufng-box, G, immediatelyWithin and adjoining which the interior of the box C is screw-threaded,H, to receive a corresponding male screw, I, on the pipe B, so that bysimply turning or rotating the pipe B on its axis its inner end can bemade to project more or less into the boiler. The inner end of the pipeB is formed into a seat, J,

to receive a conical valve, K, whose stem k traverses the entire lengthof the pipe B, projecting somewhat beyond the outer end of the latter,where it terminates in a knob, 7c', or other suitable provision forreceiving a blow from the hand of the engineer, Whenever he may desireto sound the Whistle independently of the automatic apparatus.

The inner end of the box C has a lug, Ii, which forms thejournal-bearing of a piece,

M N, called the sector. Concentric with the journal m of this sector is'a half spurwheel, M, which. gears to a circular rack, q, upon a sleeve,Q, which slides upon the inner end of the pipe B. The other portion ofthe sector consists of a fan-shaped wing, N, to which the ball-arm O ishinged at o. A slot, n, in the Wing N, concentric with the hinge o, anda bolt, jp, enable a more or less elevated attachment of the arm to thewing, by which device Whistles of a uniform pattern may be adapted to agreat variety of boilers.

P P are stops for use in certain cases where the ball may be required tohave a somewhat greater range than the sector.

It is obvious that the sleeve Q will impinge against and thus open thevalve with greater or less readiness, according as the pipe B isretracted from or protruded into the boiler, thus causing the alarm tooccur at Whatever stage of water may be desired.

By a slight and self-evident change in the form and position of thesector M N the apparatus may be easily adapted for insertion in avariety of positions, either in the end or in the top of a boiler. 4

I claim as new and of my invention hereinl'. The described combinationand arrange- -ment of the box C H, adjustable pipe B I J,

valve K, sleeve Q q, and sector M N, operating in the describedconnection with the floatarm O, for the purpose of varying the point ofalarm from the outside of the boiler, as set forth. l

2. The cogged sector M N, provided with a segmental slot, n, in thedescribed combination, with the sliding sleeve Q q, loat-arm O, and boltp, to enable the application of the alarm to any part of the boiler, asset forth.

In testimony of which invention I hereunto set my hand.

JNO. L. FRISBIE.

Witnesses:

GEO. H. KNIGHT, y A. SUMNER.

